<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <p>文本1</p>
    <br>
    <p style="text-align: center">文本2</p>
    <p>文本3</p>
    <center>居中显示</center>
    <ur><!-- 无序号列表 -->
        <li>一号</li>
        <li>二号</li>
        <li>三号</li>
        <li>四号</li>
        <li>五号</li>
    </ur>
    <ol><!-- 有序号列表 -->
        <li>一号</li>
        <li>二号</li>
        <li>三号</li>
        <li>四号</li>
        <li>五号</li>
    </ol>

    <dl>
        <dt>说明：</dt>
        <dd>界面</dd>
        <dt>说明</dt>
    </dl>


</body>
</html>